//The MIT License (MIT)
//
//Copyright (c) 2018 dote
//
//Permission is hereby granted, free of charge, to any person obtaining a copy of
//this software and associated documentation files (the "Software"), to deal in
//the Software without restriction, including without limitation the rights to
//use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
//the Software, and to permit persons to whom the Software is furnished to do so,
//subject to the following conditions:
//
//The above copyright notice and this permission notice shall be included in all
//copies or substantial portions of the Software.
//
//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
//FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
//COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
//IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
//CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

package com.github.dote.mio.session;

import com.github.dote.mio.client.IOClient;
import com.github.dote.mio.server.IOServer;
import lombok.extern.slf4j.Slf4j;

import java.util.*;
import java.util.concurrent.ConcurrentHashMap;

@Slf4j
public class SessionManager {

    private final Map<String, IOClient> allClients = Collections.synchronizedMap(new TreeMap<>()) ;
    private IOServer server;

    public SessionManager(IOServer server) {
        this.server = server;
    }

    public IOClient getClient(String sessionId) {
        return allClients.get(sessionId);
    }

    public void addClient(String sessionId, IOClient client) {
        if (allClients.containsKey(sessionId)) {
            IOClient removedClient = allClients.remove(sessionId);
            if (removedClient != null && removedClient.isConnected())
                removedClient.close();
        }
        allClients.put(sessionId, client);
    }


    public void removeClient(String sessionId) {
        if (sessionId != null && !"".equals(sessionId))
            allClients.remove(sessionId);
    }

    public void removeClient(IOClient client) {
        String sessionId = client.getSessionId();
        removeClient(sessionId);
    }

    public boolean isConnected(IOClient client) {
        return client.getSessionId() != null && !"".equals(client.getSessionId()) && client.isConnected();
    }

    public boolean isOnline(String sessionId) {
        return getClient(sessionId) != null;
    }

    public Collection<IOClient> getAllClients() {
        return allClients.values();
    }

}
